Lock



M. ZAWISTWSK!l LOCK.

APPLICATION FILED MM5, Iseo.

Patented May 30, 1922.

lllllll ll/lll 11111. I nu" III U Nfl 'Il ST AT, E S

MARTIN ZAVJ'ISTQVTSK,

APersur' OFFICE.

F BROOKLYN, NEW YORK;-

LOCK.

Speecatioii o of eonstrurtion and 4arrangement oi the bolt,`

tumbler and bolt operating. mechanism.

In my improved lookY the bolt is inouiitd to turn about an axis and `is so formed that when `rotated to operative positionj it holds the looked members not only against normal relative movement but `also against all other relative movements.

1s oneiniportant Yfeat-ure of my leek, the bolt is in theL forni oi a flangeddisky with one side'eut away alonga ehord so that 'the Chord mayl approximately Coincide with the side oit the leek` easing when the bolt is in non-lookingv position. or the bolt may be rotated through 180 Y? nioreor less.I and the flanged portion brought outside olf the easingrandl into looking engagement with the receiver or retainer; As another lfeature, I provide an operating member which is so geared to the bolt that it may be turned through one `com ilete rotation to turn the bolt through one-halt a complete rotation, in other Words,y 'from non-looking to full looking position or yiee Versa. iis anothery important ileatiire, I provide a novel form' o'lituinblor which will positively loelr the bolt in either oit two opposite positions and prevent rotation thereon", the` bolt operating'.

mechanism beine; so designed as to aetiiate both the tumbler andl the gearing:

lily/improved lool; in its preferred form involves a Very smallv number of parts ot' simple, inexpensive and rugi'gred eonstruetion.A `easily Lw.nmbled` landV `held against any possible accidental"displacement.V The Aar-r ran gement whereby the i operating member makes aeoinplete revolution for oneshalif revolution of the bolt.,` readily adapts the devine for use with a removable operating key, as the lrey may be Withdrawn `with the bolt in either olf-two positions.

In the Aaeeoinpanying drawings:

fy Letters Patent-- Patented May 30, 1922.

Application led. May 5, 1920."y Serial No. 378,969.

Figure 1 is a. face Viewof the operating mechanism viewed substantially on the line 1-1 of Figure l;

Figure)` is a View of the opposite side oi" ythe mechanism' andltaken on theline 2 2 of Figure f1;

Figure 3 Viewed from thelefthandjend fof Figure 1;

Figure lis` a central longitudinal seotion;

mechanism; and

Figure G is an lelevation partly in section is ann end View of theeasing" Figure 5 is al detail of the operatingjr` showing awkey` eontrolled'ifoperating meehanism.

The specific bolt illustrated includes a metal diskl() presenting a cylindrical flange 11 on one face thereof 1at the periphery. The

member `forms only the major segment of a circle,` ay minorsegment being omitted or cut away along` a eh'ord` "of theeirele forming an approximately `straight Aledbf're 12 `on the dislr. The disk is mount-ed to rotatef'aboutasuit-4 able pivot or ournal member'whieh may'be rig-id With thefdisk and rotatable in its bearings or rigid inthe bearings yand having lthe disk rotated thereon.` The disk' or `loelrbolt` is preferably mounted 5in a suitable easing;

oneend `Wall 14; oi which hasa 'slot 15 Correthe diskE alone` the flat surface or edge 1Q of the latten l/Vitlithe bolt in the position shown in Figure '1, the-'straight edge4 12 of end Wall 111 ofthe easingi'gand said straight side may lie Within and substantiallyClose the slot-1iL By rotatiim` th'edisk through Within theeasing, as sho-Wn 'in Figure'l, and the 'flanged :segment of the dish/'Will 'project beyond the end Wallflll of the easing.

In connection Witlrthe look, any suitable reta iner'may be employed Whieh will engage eorrespondingto andopposed Ato the slot '15 of the bolt easing. The retainer has an up- .standing projection 1 7 aroundwhiehfthe langell may pass l'during "tlieffrotation' of spending in size and shape to theeontour of* the boltmay substantially coincide with the 1800 the straight side may eonienentirely the bolt. This projection may be of suoli :torni that it cooperates with the wall of the casing and leaves merely a narrow groove or passage tor the flange 11. is the iiange passes around this projection7 it positively prevents any separation of the bolt retainer and the bolt casing either in a directionat right angles to the plane of vthe diskor in` said plane. Furthermore, due to the length oi' the slot 15 and the fact that the disk extendsacross from its casing to the retainer along the Yfull length ot this slot, any twisting or turning movement of the retainer and bolt casing is prevented.

Rigidly secured to the disk or toi-ined in- 4 tegral therewith is a gear wheel'18. To

economize i space this is preferably on the same side ofthe disk as the flange 11. Meshing with the gear is a pinion 19 of one-halt the pitch diameter. rlhe diameters ci? the gear and pinion are, such that the pinion may lie closely adjacent to the surface of the disk and between the periphery of the `gearand the 'inner surface of the flange 11.

along which thesetwo recesses are located is at right angles to the chordalongwhich the edge 12 lies. These recesses serve to receive my improved tumbler and retain the bolt disk in either =o its two main positions. The tumbler is' in the form of a sheet metal plate 22 lying between the body of the disk and thewall of the casing and presenting a locking lug 23 which may enter either of the recesses 21 or ride along` the periphery of the raised portion or boss 20. Means are provided for resiliently pressing this tumbler memberinto operative position and for normally yholding it in such position. In the forni shown suoli resilient means include a pair of coil springs 24 disposed between the end wall of the casing .and an upturned liaiige 25 along one edge or the tumbler plate 22. For holding the springs iii posinv tion, this flange may have lugs 26 struck out therefrom and extending endwise into i the springs. The' plate may be of a width substantially equal to the width oi the interior ofthe casing so that the yplate can move only in a singlevdirection. The flange 25may extend to the opposite side oi the casing as Lshown'inFigure L tand a portion of the plate may lie between the disk bolt andthe wall `of the casing so as to guide that portion vci?tlieplate` The plate may be oi' hot'the casin lluence oi.: any lateral pressure on the lng vthe member is turned.

approximately the same thickness as the height `of the boss 20, as is shown in Figure 4l. is the springs are mounted adjacent to the opposite ends of the plate and the locking lug or tooth 23 is midway'between the opposite ends, the lugwill be pressed directly toward the axis of the bolt disk. As the plate is guided by the opposite edges g, it cannot turn under the iii- 'l,}relierably the opposite side edges of the lug are parallel as are also the opposite side edges ot each recess 21 so tliat any strain on the bolt disk, tending to rotate it,k

cannot act to force the lug out of the recess. Preferably the extremity of the lug. as well as the entrance portion of each recess, is beveled or inclined so that the lug will be more easily guided into the recess when the locking bolt approaches each of its two normal positions.

For forcing the tumbler kplate back against the springs 24 and thereby withdrawing the lug 23 from the recess 21 to permit rotation of the locking boltJ provide an operating mechanism associated with the pinion 19. This member is shown as having a collar portion 27 with a major portion of its lperiphery cylindrical. At one side there is a recess in the form of a fiattened portion or reentrant angle 2S with which a flange 29 engages. This iiange is shown as being formed of a tongue struck out from the central portion of the tumbler plate 22 and bent around the edge of the bolt disk 10, as is shown particularly in Figures l and 4C. The end portion of this vtongue is normally pressed toward the collar 27 and rides on the surface of the latter as Y The tongue may have a flat end if the recess 28 on the collar 27 is merely axcut away segment or it may be slightly pointed as shown in Figure l in case the recess is in the form of a reentrant angle. As the collar 27 is rotated, it acts as a cam on the endfot the tongue 29 and thereby forces the tumbler/plate 22 backward from the position shown in Figure 1 and until the lug 23 is withdrawn from ythe recess 21. The form of the co-acting parts on the collar 27 and the tongue 29 are such that the range oi movement of the tumbler plate 22 is properly proportioned to the cooperating engagement of the lug 23 and recess 21.

As the lockingbolt cannot rotate until the lug 23 is withdrawn rom'the recess 2l and as Vthe pinion 19 can only rotate by'or with the locking bolt,'l provide lost motion connections between the member 30 which carries the collar 27 and, the pinion 19 which is coa-:rial with the collar. As shown particularly in Figure 5, the member 30 has a pair of oppositely disposed outwardly extending vflanges or ears 3l disposed nrecesses 32 in,

the pinion, althouglr materially narrower than saidrecesses. The width et the recesses 32 in respect to Hanges Slis dependent upon the angular movement ot the collar 27 which is necessary to` force back the tumbler plate. The flanges 3l are shown in ure 5 as intermediate `ot the opposite sides ol. their respective recesses which is the normal position when the bolt disk is looked by lug Q3 and the tongue 29 enters the recess ot the collar 2T. Byrotatingthe member 30 with its collar 27 and projections 8l in either direction, the first eil'ort will better the collar to torce back the tongue 29 and tumbler plate and release the bolt. By-the time the bolt is released the projections 3l will reach the end of the recesses and urther rotation oit' the operating member 30 will turn the pinion and bolt disk.A lVhen the pinion has been rotated through a complete revolution, the bolt dish will `have been rotated through one-halr a revolution and between complete release and complete locking positions. lt will, ofcourse, be evident that the recesses may be so positioned that the operating member may turn in only one direction from normal and, in that event, the end of the tongue 29 and cam collar 27 might be so formed as 'to prevent rotation of said collar in other than this same` direction.

l do not wish to be limited to any particu lar means for turning the operating member. In Figure l l have illustrated merely a conventional form of handle 33 connected to the operating member 30. In case it is desired to rotate the operating member by a removable key, I may provide a common liorm oft mechanism in which the key 31.1. enters a slot in a barrel 35 which latter may be directly connected to the operating member 30 in any suitable manner. The barrel 35 and its casing 36 may have co-operating tumblers or any other suitable means whereby the barrel cannot be rotated except when the proper key is inserted. I have not illustrated the details oit such a barre-l and casing construction as such is old and common in the art and forms no portion of my pres ent invention.

l do not Wish to be limited to any speciiio 'form ot casing or method ot mounting my improved lock. hilerely 'for purposes ot illustration l have shown a preferred casing which includes a sheet metal box with a separable wall 37. This wall may be secured to the surface oit' the door or other member to be locked in any suitable manner, as for in stance by screws 88 shown in dotted lines in Figure 6. One edge ot this wall 37 may have lugs or tongues 39 which may project through corresponding apertures in the end wall 40 of the casing opposite to the end wall lll which has a slot l5. The end wall l-l is show having an extension or flange al which may lay along the edge of the door or other closure member and be secured thereto byy screws 42, shown indottedlines besecured in place and then the balance of the casing attached by lirst catching kthe tongues or lugs 39 into their registering aperturesA and then swinging the casing into linal position.r Then the `.screws 4t2 are inserted and the door closed no screws or other tasteningmeans will be exposed at either side of the door and, therefore, there will be no parts exposed which' can be re* moved ttor detaching the look-in: the construction as shown in Figure 6. Then aikey is employed the barrel 3G isishown as being secured directly to that walls? of `the Vlock casing by screw bolts a3. Theopposite parallel walls oit the casingfmay be held in properfspaced relationship notionly by the edges oitfthe casing but alsoby spacers l-i which may beirigidly` secured to either of the two opposite i walls.

andfscrews may extend through the other wall into central apertures in the spacers for holding the opposite walls together. rFliese spacers are shown at opposite sides of the tumbler operating tongue 29 and the plate Q9 is shown as having recesses through which the spacers extend and oi such size that the spacers do not interfere with the tree movement of the tumbler plate.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

l. A rotatable bolt for locks, comprising a disk forming the major segment of a circle and presenting a cylindrical flange along the curved portion oi its periphery, a gear rigid with said disk on one tace thereof and a boss rigid therewith on the opposite tace and having tumbler engaging portions at diametrically opposite points.

2. A lock, including a rotatable locking disk, a sheet metal plate adapted to engage with said disk to lock the latter against rotation, a rotatable member for sliding said )late to inoperative position and driving connections between said rotatable member and said disk.

A lock, including a rotatable locking disk having (fliametrically opposed recesses, a slidable sheet metal plate having a projection adapted to engage with either of said recesses to lock the disk against rotation, a rotatable member for sliding said plate to inoperative position and driving connections between said rotatable member and said disk and having limited lost motion.

4. A lock, including a rotatable bolt member having a pair of diametrically opposed recesses, a slidable plate having a lug adapted to entereither ol said recesses and lock said bolt against rotation, a rotatable member having cam engagement with said plate for ln some cases these space s-may be rigidly secured to one wall H JOU yio

withd'awing the latter and releasingvsaid bolt and released.

5. A lock, including a rotatable bolt member having` a pair oi diamctricall'y opposed recesses, a slidable plate having a lug adapted to enter either oi said recesses and lock said bolt against rotation, a rotatable member having cam engagement with said Vplate for withdrawing the latter and releasmeans lor rotating said bolt whenV vrotatable member having a cam surface for engaging with said tongue to move said plate to inoperative position and having lost motion connections with said pinion.

7. A lock including a rotatable bolt comprising a disk forming the majorsegment of the circle and presenting a cylindrical flange along the curved portion of the periphery, a gear rigid with said disk on the face thereof bearing said flange and a boss rigid therewith on the opposite face and having tumbler engaging portions, a slidable tumbler and a pair or' coaxial members having lost motion connections, one of said members serving to operatesaidtumblervand the other of said members comprising a pinion engaging with said gear and disposed between the periphery of the latter and the inner surface/or1 said flange. Y

Signed at New York city in the county of New York and State of New York this 28th day of March A. D. 1920.

f MARTIN ZAWrsrovzfski. 

